Supply circuit for supplying power to a switch circuit

摘要

To improve energy efficiencies, supply circuits (1) for supplying switch circuits (2) have first supply modes for receiving first amounts of input power from sources (7) and providing first amounts of output power to output circuits (5) comprising control parts (3) of the switch circuits (2) and have second supply modes for receiving second amounts of input power and providing second amounts of output power. The first amounts of output power are larger than the second amounts of output power. The second amounts of input power are larger than zero and smaller than amounts of switch power necessary for operating the switch circuits (2). The switch circuits (2) may comprise relays for switching loads (8). The first amounts of input power may arrive via main contacts of the relays. Switches (47) may switch output signal levels. The relays may be bistable relays.

主权项

1. A supply circuit for supplying power to a switch circuit, the supply circuit having
a first supply mode for receiving a first amount of input power from a source and providing a first amount of output power to an output circuit having at least a control part of the switch circuit, and a second supply mode for receiving a second amount of input power and providing a second amount of output power, the first amount of output power being larger than the second amount of output power, and the second amount of input power being larger than zero and being smaller than an amount of switch power necessary for operating the switch circuit the switch circuit including a relay for switching a load and electrically interposed between the first and second input, the relay actuating the supply circuit between the first supply mode and the second supply mode;the supply circuit further having a first input coupled to the first main relay contact, a second input coupled to the second main relay contact, a third input, and first and second outputs coupled to the output circuit, the first output being coupled to the first input via a first branch, the first output being coupled to the second input via a second branch, and the first and second outputs being coupled to each other via an output capacitor, wherein
the first branch comprises a first resistor and a first capacitor coupled serially, and the second branch comprises a second resistor and a second capacitor coupled serially, the first capacitor having a smaller value than the second capacitor, the first branch being coupled to the first output via a first diode and to the second output via a second diode, the second branch being coupled to the first output via a third diode and to the second output via a fourth diode, the first output being coupled to the third input via a fifth diode, the second output being coupled to the third input via a sixth diode, and the supply circuit further comprising a voltage stabilizer coupled in parallel to the output capacitor.